Luna at the Weasley Wedding

Like her father, Luna was wearing bright yellow robes, which she had accessorized with a large sunflower in her hair. [...]
"Oh, it's fine," said Luna, sucking her finger in a dreamy fashion and looking Harry up and down.
- Harry Potter and the Deathly Hallows, pp 140-141 (Amer. ed)

Art100 Challenge Prompt: Sunflower